Pickup Truck air condition


Old 06-02-02, 06:57 AM
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Pickup Truck air condition

I have a 1987 GMC pickup, what must I do to convert my air conditioner form R12 to the R134 freeon.
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Old 06-02-02, 07:13 AM
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R12 works best in vehicle that was designed for it......R134A is not as efficienct of a replacement.

At minimum: New orifice screen, new dryer, new hoses, new O rings, flush out the old oil and replace with R134A compatible oil.

I have used Autofrost which is an R12 replacement with success in my older GM cars.

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